Under Bonnet 25A DC-DC Battery Charger With MPPT Solar Regulator
HKPDCDC25UB
Regular price$349.00Tax included.
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2 Year Replacement Warranty
Under Bonnet 25A DC-DC Battery Charger
With MPPT Solar Regulator
Under Bonnet 25A DC-DC Battery Charger With MPPT Solar Regulator
Engine bay ready
Charge your battery while you drive or with the sun
Whether you’re touring the country with the family in tow or just trying to keep your drinks icy cold between job sites, our DC-DC charger is one of the easiest ways to keep your batteries topped up without being tethered to a mains power supply. The charger can be used on a range of batteries including both 12V SLA, AGM, gel, calcium, and LiFePO4 systems.
The DC-DC works by converting the power from your alternator into a charge voltage that carefully, but quickly, suits the status, and chemistry of your auxiliary battery all without affecting your vehicle’s starter battery. Designed to work on most vehicles, it’s compatible with either traditional or fixed/smart alternators and will feed up to 25A into your batteries per hour.
There’s a dedicated Anderson-style plug coming from the unit for the inbuilt Maximum Power Point Tracking (MPPT) solar regulator function. The charger will use the power coming from the solar input when it detects it as either the only available power source, or if the solar input exceeds the power being produced by the vehicle. Able to regulate up to 25A, it’s able to handle solar up to 15% more efficiently than traditional Pulse Width Modulation (PWM) regulators.
With a high heat tolerance, the charger can be mounted in most places including under the bonnet. This is particularly useful in vehicles that have the space for an additional battery in the engine bay, like in Landcruisers and Patrols, helping to not only reduce voltage drop but also free up some space in the back of the vehicle.
The charger comes with three pre-wired Anderson-style plugs to make installation simple. The black plug connects directly to the auxiliary battery, the traditional grey plug is the dedicated solar input, whilst the three-pin Anderson plug can be used to quickly connect to the vehicle.
| DC Battery Input | 9-32V |
|---|---|
| MPPT Solar Input Voltage | 10-32V |
| Maximum Input Current | 30A |
| Maximum Output Power | 25A |
| Minimum Solar Input | 15W |
| Ingress Protection | IP66 |
| Operating Temp. | -20°C – 80°C |
| Compatibility | 12 SLA, AGM,Gel, Cal, LiFePO4 |
| Dimensions | 156mm (L) x 130mm (W) x 45mm (H) |
| Certifications | IEC/EN 61000-6-1 |
| 1x | 25A DC-DC Charger With Pre-Wired Three-Pin Anderson Plug |
|---|
Frequently Asked Questions
This product has a 2 year replacement warranty. This means that if the product is found to be faulty, we will replace the whole product. See our warranty page for details.
With our network of over 1000 stockists around the country, we’ll make sure there’s always someone nearby ready to help.
When you need a hand, the last thing you want is a dodgy chatbot or AI to ‘help’. Our in-house team is at your service.
E
As far as the more budget end of DC DC chargers this one seems best built to me, I looked at a few like kings, kickass and xtm, dune before going with the hardkorr. Whoever designed this at hardkorr clearly put a bit of thought into it.
The hardkorr charger seems a step above the others in build quality, with cooling fins on all threes sides instead of one or two. The pre wired cords seem higher quality then the others. It's also the only budget charger that is rated for under bonnet installation and an tolerate up to 80 degrees. Mine isn't going under bonnet but I liked that hardkorr has rated it for tougher conditions, gives me confidence it will tolerate hotter climates in my wagon. Both solar and alternator inputs work well for putting charge in.
Super easy install. I built a little cage around it to make sure it's getting quality airflow and stuff isn't being placed direct on it as recommended by hardkorr.
The only thing missing was there is no temperature sensor cord to place on your battery so the charger can adapt charging based on battery temperature for AGM. It's unlikely to be a big deal for me with an air-conditioned wagon but it might matter more for under bonnet installation. My old DC DC charger had this so felt weird to reinstall without a temperature sensor but that said it does everything I want it to do.
Hi Elliott, thank you for sharing your detailed review! We're glad to hear you find the Under Bonnet 25A DC-DC Charger to be well-built and suitable for tougher conditions. Your feedback on the build quality and installation is much appreciated, and we'll take note of the temperature sensor aspect for future improvements. Thanks again for choosing HARDKORR!
T
Purchased the DC-DC 25 to got with the Hardkore battery box and wiring kit and it was a very easy plug and play install, with mounting and connecting the pre crimped wires to the main battery it took me 40mins. Great quality product with a tough but sleek exterior. Defiantly recommended for a hassle free set up.
Hi there! Thank you for taking the time to leave us a review. We're so happy to hear that you had a great experience with our 25Amp DC-DC charger and found it easy to install. We take pride in providing high-quality products that are both durable and sleek. Thank you for recommending us to others. Happy charging!